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Bazooka MBTA8250D

Marine BT Series 8" Bass Tube with built-in 160-watt amplifier

6 Reviews | 3 questions - 3 answers

Item # 204MBTA825

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Was: $399.99

Price break: -$80.00

$319.99 each or 3 payments of $106.66  Details

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Our take on the Bazooka MBTA8250D

Want to make a big splash with your boat's sound system? Bazooka's marine-ready MBTA8250D 8" amplified Bass Tube puts out powerful bass that'll add low-end punch to your music out on the water. This space-saving sub offers an ideal solution if you don't want to make a lot of modifications to your vessel.

Big bass for the great outdoors

Want to make a big splash with your boat's sound system? Bazooka's marine-ready MBTA8250D 8" amplified Bass Tube puts out powerful bass that'll add low-end punch to your music out on the water. This space-saving sub offers an ideal solution if you don't want to make a lot of modifications to your vessel.

The Bass Tube features an 8" woofer and a built-in Class D 160-watt amp housed in a UV- and moisture-resistant enclosure, and it comes with an installation kit that includes a power/signal harness and mounting straps. Speaker- and preamp-level inputs ensure it can be connected to almost any radio.

An optional wired Remote Bass Control Module gives you independent cockpit volume control of the bass output.

Product Highlights:

  • marine-ready 8" amplified Bass Tube
  • waterproof 8" woofer with foam surround
  • power output: 160 watts RMS (250 watts peak)
  • variable low-pass filter (60-250 Hz, 18 dB/octave)
  • subsonic filter (12 dB/octave at 35 Hz)
  • frequency response: 35-250 Hz
  • sensitivity: 102 dB
  • speaker- and preamp-level inputs
  • 8-9/16"W x 10-1/16"H x 18-3/4"D
  • warranty: 1 year
  • Our 60-day money-back guarantee

What's in the Box:

  • One 8.0" amplified marine tube-style subwoofer with attached grille
  • 10" Signal wiring harness
  • Power wiring harness (has an 11" power lead and 23" ground lead)
  • 1 In-line fuse holder with a 20A fuse (has 4" leads on both sides)
  • 2 Yellow butt connectors
  • 1 Crimp-on ring
  • One 1/2" self-tapping screw
  • Two 3' mounting straps (each strap has an attached plastic mounting base)
  • Four 1" self-tapping screws
  • Installation Manual

Great upgrade for the sound system & easy installation !!!!

Carlos, Carolina, PR


Bazooka MBTA8250D Reviews

Average Customer Review(s):

(6 Reviews)

Great upgrade

Carlos from Carolina, PR on 3/13/2019

Crutchfield Customer Review (What's this?)

Great upgrade for the sound system & easy installation !!!!

Pros: Easy installation.

Cons: Nop

Bazooka MBTA8250D

Crutchfield customer from Plymouth, MN on 9/5/2018

Crutchfield Customer Review (What's this?)

Simple install and great sounding product!



Good solution

Crutchfield customer from Brainerd, MN on 1/31/2018

Crutchfield Customer Review (What's this?)

Overall a good solution for simple install, just a little spendy little sub. Not much else out there for a all in one amplified unit. Sounds good- Hopefully it holds up.



Bazooka MBTA8250D

Allen from Greeneville TN on 2/13/2017

Crutchfield Customer Review (What's this?)

Very good sound very clear and simple instalation

Pros: Good price and easy install



madgadget from Missouri on 7/1/2015

Crutchfield Customer Review (What's this?)

This is my 3rd bazooka but first new one. My 2 previous boats had 8" bazooka tubes. There's no denying that a pair of 10" can pound harder but for all of the associated baggage I'll take the trade of a little less bass for more room and convenience. When we park in party cove our pontoon system gets compliments and I imagine the new runabout will too. Even though my head unit has sub out and level control I ordered the remote gain and xover control because it's easier than navigating through menus to adjust output. These tubes just work, sound good, all in a small footprint. On a boat or any vehicle within reason it's difficult to get more thump for your $$. imo

Pros: tight bass in a small footprint

Cons: not free

Loved it

DanB from California on 6/11/2015

Crutchfield Customer Review (What's this?)

Straight forward installation - product performs flawlessly on my aft-cabin boat - has totally changed the sound on board...can't recommend it enough.

Pros: Looks good - sounds great

Cons: Only thing I wish they had was an elegant cover/conduit for the back of the unit to hide the two sets of cables until you can get them behind a wall. Ended up taping them tightly but that part could look better


Hands-on research

Product Research



Marine Grade Construction: The MBTA8250D features an 8" waterproof poly woofer. The woofer is powered by a built-in 160-watt (250 watts peak) digital amplifier. The patented Bass Tube enclosure design eliminates bass standing waves for high accuracy, and superior efficiency. The enclosure is certified salt fog and UV resistant for 5 years and the included mounting hardware is stainless steel.

Low-pass Filter: The MBTA8250D has a low-pass filter that can be adjusted from 60 to 250 Hz.

2nd Woofer Output: The MBTA8250D has a high-level output for adding an optional MBT8014 (204MBT8014) passive bass tube to double the bass. The amplifier output increases to 275 watts (peak) when the 2nd woofer is connected.

Remote Level/Crossover Control: Using the optional RBCM-250D remote control (204RBCM250), you can control the bass output level and crossover frequency of the subwoofer from a remote location.


Level Control: There is a rotary control on the rear-panel that allows you to adjust the level of the subwoofer.

Crossover Control: The unit's rotary control is found on the rear-panel and allows you to adjust the low-pass filter from 60 to 250 Hz.

Power LED: If power, ground and remote are connected properly, the LED on back of the unit will illuminate in green.


Remote Control: Phone-type jack for use with an optional remote control; found on rear-panel

Power Harness: Two quick-slides for use with supplied power harness; found on rear-panel

Signal Harness: 14-pin Molex plug for use with supplied signal harness


Installation: Each mounting strap has an attached mounting base that can be secured to your vehicle using the supplied self-tapping screws. Once the mounting bases are installed, the tube is held in place by the mounting straps. For best results, the tube should be mounted facing into a corner, and there should be 2" to 4" between the woofer and the corner into which the woofer is pointing.

Required Accessories:

  • Power Wire: The 12-gauge power lead is only 11" long, so additional wire is required to extend it to the battery. Additional power wire must be crimped or soldered to the Bazooka's power lead.
  • Ground Wire: The 12-gauge ground lead is also only 23" long, and may need to be extended. Additional ground wire must be crimped or soldered to the Bazooka's ground lead.
  • Speaker Wire: required only when using the high-level inputs
  • RCA Patch Cord: required only when using the low-level inputs
  • Remote Turn-on Wire: required to connect the remote turn-on lead to the amplifier turn-on lead of your radio

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

Pure awesome! [ KEN  Nov 18, 2016 ]

3 questions already asked

For additional details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on how everything connects and what you will need for an installation in your vehicle. [ Kenny  Mar 23, 2017 ]  Staff
Not sure how many amps it draws but it does have an inline fuse. I really like my sub. [ KEN  Mar 13, 2017 ]